The original "No Mercy" campaign was added to L4D2 last October alongside "The Sacrifice" DLC. Valve hasn't announced a launch date for the upcoming map pack yet, but the developer says it won't ...

Valve is calling for 20,000 strapping young lads to test drive a new Left 4 Dead 2 campaign. Dubbed "Cold Stream," the map began as a project of community member Matthew Lourdelet, ...